On Sat, Oct 18, 2025 at 03:03:39PM +0300, Jarkko Sakkinen wrote: > The following changes since commit f406055cb18c6e299c4a783fc1effeb16be41803: > > Merge tag 'arm64-fixes' of > git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux (2025-10-17 > 13:04:21 -1000) > > are available in the Git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git > tags/tpmdd-next-v6.18-rc2 > > for you to fetch changes up to dbfdaeb381a49a7bc753d18e2876bc56a15e01cc: > > tpm_crb: Add idle support for the Arm FF-A start method (2025-10-18 > 14:33:22 +0300) > > ---------------------------------------------------------------- > Hi, > > If possible, could you still pick this change for v6.18 [1]? The change in > question corrects the state transitions for ARM FF-A to match the spec and > how tpm_crb behaves on other platforms. > > [1] https://lore.kernel.org/linux-integrity/[email protected]/ > > BR, Jarkko > > ---------------------------------------------------------------- > Stuart Yoder (1): > tpm_crb: Add idle support for the Arm FF-A start method > > drivers/char/tpm/tpm_crb.c | 29 ++++++++++++++++++++--------- > 1 file changed, 20 insertions(+), 9 deletions(-)
I don't have the specific hardware to test this but I did a quick compilation test: make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 tinyconfig && ./scripts/config --file .config -e CONFIG_KEYS -e CONFIG_TCG_TPM -e CONFIG_64BIT -e CONFIG_TRUSTED_KEYS -e CONFIG_TTY -e CONFIG_PROCFS -e CONFIG_SYSFS -e CONFIG_TCG_VTPM_PROXY -e CONFIG_EFI -e CONFIG_ACPI -e CONFIG_ARM_FFA_TRANSPORT -e CONFIG_TCG_CRB && yes '' | make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 oldconfig && make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 -j$(nproc) And in addition with similar features x86 compilation test and run my smoke tests with swtpm emulating tpm_crb (kselftest, keyring, trusted keys type of stuff automated). Those should localize any possible corrateral damage to only FFA, if any (and not very likely). BR, Jarkko
